What is the poem in Gui's life that describes that people are old and never grow old? Please, great gods.

"Old horse, ambitious. In the year of martyrs, go forward bravely. " These four poems are the climax and core of the whole poem. The word "Fu Jian" has two different interpretations. One thought it was "lying in the stable"; Another person said that the solution is to "occupy the toilet and not shit." These two statements have their own rationality. No matter which one we agree with, the author thinks it will not affect our understanding of this poem. Whether you are lying in the stable or eating in the manger, the poem emphasizes that the horse is old. However, even in old age, it still has a thank-you gentleman who travels thousands of miles every day. These two poems also use figurative rhetoric, comparing a swift horse to a martyr, suggesting that although the poet is nearly sixty years old, he is unwilling to get old, should not be depressed in his later years, and is still eager to make contributions, expressing the heroic spirit of unity and innovation, and has a great potential to seize the land, which fully shows Cao Cao's great personal charm. These four poems have been pondered by countless immigrants, and they are still full of praise and stirring. Wang Bo, a poet in the early Tang Dynasty, said in Preface to Wang Tengting that "it is better to be old and strong than to be old." These two sentences have the same effect. I am old, but my heart is not old, my ambition is still there, and my ambition is still there.